Doc updates

docs/navigation.md

@@ -46,7 +46,8 @@ protected override async Task HandleInternalAsync(LaunchActivatedEventArgs args)
 
 
 ## Mixed navigation sample
-In [this sample](../samples/navigation) we are going to create an app which includes a _startup page_ before navigate to SplitView shell page.
+In this sample we are going to create an app which includes a _startup page_ before navigate to SplitView shell page.
+The following code is related to [MVVMBasic](../samples/navigation/MixedNavigationSample.MVVMBasic) framework, versions for [MVVMLight](../samples/navigation/MixedNavigationSample.MVVMLight) and [CodeBehind](../samples/navigation/MixedNavigationSample.CodeBehind) frameworks are available.
 
 - Step 1. Navigate to Start Page on App.xaml.cs
 ```csharp
@@ -85,4 +86,4 @@ Here is the navigation flow on this sample:
 
 ![Mixed navigation sample](resources/navigation/MixedNavigationSample.png)
 
-This sample was built using three different frameworks on Windows Template Studio 1.3 release.
+This sample is based on Windows Template Studio 1.3 release.